Year	U.S. dollars (Billions)
1980	1.006
1981	1.190
1982	1.150
1983	1.151
1984	1.236
1985	1.340
1986	1.650
1987	1.870
1988	2.186
1989	2.065
1990	2.488
1991	2.465
1992	2.570
1993	2.246
1994	1.819
1995	2.230
1996	2.479
1997	2.382
1998	2.690
1999	2.370
2000	2.142
2001	2.638
2002	3.076
2003	4.227
2004	6.816
2005	9.097
2006	10.249
2007	11.993
2008	14.354
2009	12.998
2010	14.289
2011	16.237
2012	16.174
2013	16.920
2014	18.213
2015	14.508
2016	13.400
2017	13.344
2018	15.334
2019	14.917
2020	14.615
2021	16.047
2022	16.417
2023	17.493
2024	18.697
2025	19.698
2026	20.783
2027	21.964
2028	23.252
2029	24.632